Answer:
New industried created mass production techniques which created cheaper, mass-produced products and increased employment stimulated further the demand for goods, and thus created the consumer boom which led to economic prosperity.
Open Door policy, statement of principles initiated by the United States in 1899 and 1900 for the protection of equal privileges among countries trading with China and in support of Chinese territorial and administrative integrity.
The answer would be D, push Americans to buy American-made products
